"""Serve isolated browser regression checks without the API, model or user data.

Run `python scripts/check_frontend.py`, then open http://127.0.0.1:8081.
Only a temporary copy of frontend assets is exposed. Ctrl+C stops the server.
"""
from functools import partial
from http.server import SimpleHTTPRequestHandler, ThreadingHTTPServer
from pathlib import Path
from tempfile import TemporaryDirectory
import json
import shutil

ROOT = Path(__file__).resolve().parents[1]

SAMPLE = '''# Markdown 标题

这是 **加粗**、*斜体*、~~删除线~~ 和 `inline code`。

- 第一项
  - 嵌套项
- [x] 已完成

> 引用内容

| 项目 | 数值 |
| --- | ---: |
| 风量 | 120 |

```python
def greet():
    print("<hello>")
```

[文档](https://example.com)
'''
HOSTILE = '<img src="x" onerror="window.__xss=1"><script>window.__xss=1</script><svg onload="window.__xss=1"></svg><style>body{display:none}</style>[bad](javascript:alert%281%29)<iframe srcdoc="bad"></iframe>'


class Handler(SimpleHTTPRequestHandler):
    def do_GET(self):
        if self.path.startswith('/api/'):
            if self.path.startswith('/api/chat/interrupt'):
                self.send_response(204)
                self.end_headers()
                return
            if self.path.startswith('/api/chat/history/'):
                payload={'items':[{'id':'markdown-1','msg_role':'assistant','content':SAMPLE},
                    {'id':'markdown-2','msg_role':'assistant','content':HOSTILE}],'agent_name':'main'}
            elif self.path.startswith('/api/sessions'):
                payload={'items':[{'id':'markdown-history','title':'Markdown历史测试','mode':'full'}]}
            elif self.path.startswith('/api/business-agents'):
                payload={'items':[{'name':'main_fan','display_name':'矿井主通风机研判智能体'}]}
            else:
                payload={'model':'test','items':[],'agents':[],'assets':[]}
            body = json.dumps(payload,ensure_ascii=False).encode()
            self.send_response(200)
            self.send_header('Content-Type', 'application/json')
            self.end_headers()
            self.wfile.write(body)
        else:
            super().do_GET()


if __name__ == '__main__':
    with TemporaryDirectory(prefix='deep-agent-frontend-') as directory:
        shutil.copytree(ROOT / 'static', Path(directory) / 'static')
        shutil.copyfile(ROOT / 'tests/frontend_markdown.html', Path(directory) / 'index.html')
        server = ThreadingHTTPServer(('127.0.0.1', 8081), partial(Handler, directory=directory))
        print('Frontend checks: http://127.0.0.1:8081', flush=True)
        try:
            server.serve_forever()
        except KeyboardInterrupt:
            pass
        finally:
            server.server_close()